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Re: 55mm cam bearings
[Re: sgcuda]
#2303473
05/12/17 06:42 PM
05/12/17 06:42 PM
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Joined: Jan 2003
Posts: 19,363
Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,363
Las Vegas
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I have used 55MM stuff for awhile, and yes sometimes cires are hard to come by. I prefer the roller to the babbit by about a million to one  The Predator has a big babbit deal and it SUCKS A$$ to spin over for sure. Just something else we will address next time. As for a roller failure, we had it happen in the Vette last year, was ugly and made a big mess of the block in the process
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: 55mm cam bearings
[Re: Al_Alguire]
#2303478
05/12/17 06:48 PM
05/12/17 06:48 PM
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Joined: Sep 2014
Posts: 4,457
Washington
madscientist
master
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master
Joined: Sep 2014
Posts: 4,457
Washington
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I have used 55MM stuff for awhile, and yes sometimes cires are hard to come by. I prefer the roller to the babbit by about a million to one The Predator has a big babbit deal and it SUCKS A$$ to spin over for sure. Just something else we will address next time. As for a roller failure, we had it happen in the Vette last year, was ugly and made a big mess of the block in the process We are talking about how much torque it takes to turn an engine over on the stand. What happens when the engine is running and oil is keeping the cam off the bearings? Or, are you seeing signs of the cam getting into the bearings while under load? I'm just curious if the roller bearings show a HP gain when running. Has anyone done and A-B-A test?
Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
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Re: 55mm cam bearings
[Re: madscientist]
#2303719
05/13/17 07:03 AM
05/13/17 07:03 AM
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Joined: Oct 2005
Posts: 739
Florida
408Dust
super stock
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super stock
Joined: Oct 2005
Posts: 739
Florida
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I have used 55MM stuff for awhile, and yes sometimes cires are hard to come by. I prefer the roller to the babbit by about a million to one The Predator has a big babbit deal and it SUCKS A$$ to spin over for sure. Just something else we will address next time. As for a roller failure, we had it happen in the Vette last year, was ugly and made a big mess of the block in the process We are talking about how much torque it takes to turn an engine over on the stand. What happens when the engine is running and oil is keeping the cam off the bearings? Or, are you seeing signs of the cam getting into the bearings while under load? I'm just curious if the roller bearings show a HP gain when running. Has anyone done and A-B-A test? Roller can get lubricated by splash/mist, babbit needs a little direct lubrication. I run 54mm babbit with .030 oil feeds to the cam bearings keep rest of the oil on the rods and mains.
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Re: 55mm cam bearings
[Re: sgcuda]
#2304018
05/13/17 09:33 PM
05/13/17 09:33 PM
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Joined: Jun 2005
Posts: 6,257
gulfport, ms, west mi
rowin4
master
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master
Joined: Jun 2005
Posts: 6,257
gulfport, ms, west mi
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Seems that some one did a dyno test a few years back and came up with roller vs. babbit didn't make that much difference horse power wise for the extra cost involved . If you want every little bit out of your engine than it's a no brainer, go roller.
it's ok to butt heads, just don't do it with a butthead
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Re: 55mm cam bearings
[Re: sgcuda]
#2304056
05/13/17 10:48 PM
05/13/17 10:48 PM
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Joined: Jan 2005
Posts: 4,243
Charlotte, North Carolina
sgcuda
OP
master
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OP
master
Joined: Jan 2005
Posts: 4,243
Charlotte, North Carolina
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Not a matter of what I want to do, or what is best. This is what the block already has. All I need to do now is check if all 5 bearings are the same.
[image][/image]
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Re: 55mm cam bearings
[Re: rowin4]
#2304294
05/14/17 01:21 PM
05/14/17 01:21 PM
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Joined: Jul 2004
Posts: 19,317
State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,317
State of confusion
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Seems that some one did a dyno test a few years back and came up with roller vs. babbit didn't make that much difference horse power wise for the extra cost involved . If you want every little bit out of your engine than it's a no brainer, go roller. Power is not the issue or gain it's the load from Hugh ass spring pressures most use in those combos that a roller handles and spreads loads better than babbit...........
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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